Etel DSC2P - Analog Input; Output

Operation & Software Manual
176
Direct Drives & Systems
Chapter C: System functions ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05
13.6 Analog input / output
Only the DSC2P, DSC2V and DSCDL include an analog input (refer to the corresponding ’Hardware Manual’
for more information). No analog output is present on the position controllers. It is possible to install in the
controllers (except in the DSCDM) a DSO-HIO optional board, adding up to 4 analog inputs and 4 analog
outputs (refer to the 'DSO-HIO User's Manual' for more information).
13.6.1 Analog input
13.6.1.1 Analog input on position controller
The AI1 (Analog Input 1) command enables the reading of the analog input (AIN). This command is an alias
of monitoring M51.
The input voltage of the analog input must be included between +10V and –10V:
• For the DSC2P / DSC2V: +10V corresponds to -2048 increments and -10V to 2047 increments.
• For the DSCDL: +10V corresponds to -32768 increments and -10V to 32767 increments.
Here is the formula calculating the voltage from the values contained in monitoring M51:
Example:
AI1.1 Reads the voltage on the analog input (AIN). For example, if the controller gives the value 1718
increments, use the above-mentioned formula to calculate the corresponding voltage
measurable on AIN: here, 1718 increments corresponds to ~ - 8.39V for a DSC2P or DSC2V
and ~ - 0.52V for a DSCDL.
13.6.1.2 Analog inputs on DSO-HIO
The DSO-HIO111 has 4 analog inputs (14 bits ADC). Refer to the 'DSO-HIO User's Manual' for more
information.
Remark: For the DSCDP and DSCDL, the 4 analog inputs are available for both axes.
The XAIN1, XAIN2, XAIN3, XAIN4 commands allow the user to read the XAIN1, XAIN2, XAIN3 and XAIN4
analog input of the DSO-HIO. These commands are an alias of monitorings M56, M57, M58 and M59
respectively.
Available on DSC2P DSC2V DSCDP DSCDL DSCDM
M Alias Name Comment
M51 AI1 Analog input status Reads the voltage on the analog input (AIN)
DSC2P / DSC2V DSCDL
Formulas
Available on DSC2P DSC2V DSCDP DSCDL DSCDM
M Alias Name Comment
M56 XAIN1 XAIN1 status Reads the value of XAIN1 analog input of the DSO-HIO
M57 XAIN2 XAIN2 status Reads the value of XAIN2 analog input of the DSO-HIO
U [V]
M 51
–
2048
--------------------
10⋅= U [V]
M 51
–
32768
--------------------
10⋅=